Zhongneng Media: The construction of the new power system has been fully started, and what new requirements have been put forward for electrical equipment? What are the key technical issues that need to be overcome?

Zhao Yongzhan: With the construction of new power systems, the power industry has ushered in a major opportunity for development. The realization of the “dual carbon” goal will be accompanied by large-scale grid-connection of new energy sources with strong randomness and volatility, as well as a large number of interactive devices such as electric vehicles and distributed power supplies. The digital upgrade of distribution network and the gradual development of electrical equipment to intelligent and digital form are the inevitable requirements of complying with the trend of energy reform. The requirements of the power system for the quality of electrical products are also gradually increasing.

How the grid can accommodate access to a higher proportion of clean energy power; How to connect the massive information of various electrical equipment in the urban distribution network; How to effectively improve the safety, reliability and intelligence of the power supply and distribution system, as well as the distribution efficiency, all of which have formed a challenge to the construction of a new type of power system. The current bottleneck lies in the creation of super-resilient distribution networks, energy regulation technology and equipment iot awareness technology.

In terms of building a super-resilient distribution network, China emphasizes the construction of a new power system, and the first thing is to build a strong distribution network with high toughness. The access of photovoltaic, wind power and other new energy forms a multi-source heterogeneous power grid, once the network failure occurs, the operation and maintenance of the entire system becomes complicated, difficult and changeable. Through the intelligent power distribution with high-speed information interaction, the fault can be accurately located, isolated, self-aware and self-healing quickly, meeting the requirements of timeliness and reliability of mass information transmission in the urban distribution network.

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In terms of strengthening energy regulation technologies, compared with ordinary thermal power generation technologies, new energy generation has low energy density, strong intermittent randomness, and greater impact on climate and environmental factors, and large-scale grid-connected power transmission will have a certain impact on the power quality of local power grids. Originally, the whole power grid structure is the integration and coordination of large power grids. Now, through digital technology, a demand-side response mechanism can be established on the microgrid side and the large power grid side for collaborative regulation. Through incentive policies, reasonable guidance and incentive users to actively participate in the power demand side response, so that users change the original behavior of electricity consumption, and ultimately promote the balance of power supply and demand and ensure the safe operation of the power system, which will play an important role in the stable and efficient operation of the new power system.

In terms of equipment iot sensing technology, with the construction of new power systems, there will be a large number of intelligent distribution assets deployed. How to use effective intelligent algorithms to centralize massive data on the distribution “brain” to improve the observable, measurable, predictable, and analyzable power system and improve the intelligence level of all elements of the power system, which not only provides data support for power equipment status maintenance, fault diagnosis, asset life prediction, etc., but also reduces the human, material and time costs of equipment operation and maintenance.

The construction of a new power system involves many fields, wide coverage, and a long time span, which will bring profound changes in energy layout, consumption mode, energy technology and other aspects, which need to be promoted by the government under the overall planning and the cohesion of the whole industry. ABB will strengthen cooperation with the upstream and downstream of the industrial chain, actively participate in the formulation of domestic standards, and work together with peers to contribute to the realization of the “double carbon” goal and the sustainable development of human society.